Model: SD-565 - Color: Black - ABS material housing - 1.6" LCD display - Functions: - Speedometer: Displays current / max / average speed; trip distance and elapsed time (0~99999 km / mil) - Clock: 12 / 24h selectable - Thermometer: -10~70'C; displays max / min temperature in turns - Calories / fat calculation: 0~99999K cal; 0~999.9kg fat - Wheel circumference setting: 0~9999mm - Speed scale setting: KM / Mile - Wireless heart rate monitor: Current / max / average heart rate; counts per minute - Wireless frequency: 5.3 kHz - Working range: 15 meters - Transmitter was powered by 1 x CR2032 battery (included) - Receiver was powered by 1 x CR2032 battery (included) - Package includes: - 1 x Cycling computer - 1 x Elastic heart rate strap (112cm) - 1 x Sensor (84cm-cable) - 1 x Magnet - 6 x Zip cord - 1 x English user manual Manual: http://m5.img.dxcdn.com/CDDriver/CD/sku.128903.pdf